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9. Maintenance
Cleaning the Cabinet Interior
WARNING
: Disconnect equipment from main power before attempting any maintenance to
equipment or its controls unless stated otherwise.
To clean the cabinet interior, remove the shelves, use a solution of water and a mild detergent for cleaning.
Rinse the interior storage components and wipe them dry with a soft cloth.
Cleaning the Unit (Chromatography Refrigerators)
Use a solution of water and a mild detergent for cleaning. Lightly spray the interior storage components and
wipe them dry with a soft cloth or spray the cloth first and then wipe interior surfaces.
Do not spray or pour directly into holes and gaps in the chromatography safety circuit assembly for cleaning.
Use a wet wipe to clean around sensor box and outlet.
If the sensor led turns red after cleaning, manually reset the safety circuit assembly using the manual reset
switch on the right side of header panel.
Cleaning the Condenser
CAUTION:
Condensers should be cleaned at least every six months; more often if the laboratory
area is dusty. In heavy traffic areas, condensers load with dirt more quickly. Failure to keep the
condenser clean can result in equipment warm-up or erratic temperatures.
CAUTION:
Never clean around the condensers with your fingers. Some surfaces are sharp.
The condenser is located at the bottom in front of the unit.
To clean the condenser, complete the following steps:
1. Disconnect the power.
2. Vacuum the condenser and clean up any loose dust.
3. Reconnect power.
Automatic Defrost
The defrosting process on all the models is primarily accomplished by air circulated during off-cycle. This heat
free process ensures that the temperature is not affected by the defrost cycle. Defrost cycle works on adaptive
defrost method which is both temperature and time controlled.
When the evaporator sensor reaches below 0°C, the defrost cycle will be initiated. Initially the defrost cycle
continues for a minimum duration of 5 minutes and after that the defrost cycle will be terminated once the
evaporator sensor temperature reaches 4°C. In case the evaporator sensor doesn’t reach the temperature of
4°C within 30 minutes from the start of defrost cycle, the defrost cycle will be terminated.
Gasket Maintenance
Periodically check the gaskets around the door for punctures or tears. Leaks are indicated by condensation or
frost which form at the point of gasket failure. Make sure that the cabinet is level.
Keep the door gaskets clean and frost free by wiping gently with a soft cloth.
